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工程力学  2015 

震后功能可快速恢复联肢剪力墙研究

DOI: 10.6052/j.issn.1000-4750.2014.07.ST07, PP. 1-8

Keywords: 震后功能可快速恢复,联肢剪力墙,低损伤墙肢,可更换连梁,抗震性能

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Abstract:

震后功能可快速恢复成为地震工程领域的研究前沿。该文基于损伤控制的思想,提出一种震后功能可快速恢复的联肢剪力墙,由低损伤墙肢和可更换连梁组成。在强烈地震作用下,低损伤墙肢无损坏或轻微损坏,可更换连梁耗散地震能量,震后可通过更换连梁中的消能梁段(或阻尼器)而实现快速修复。试验研究表明,钢管-双层钢板-混凝土组合剪力墙的承载力高,压弯破坏时极限变形能力达1/33,远大于钢筋混凝土剪力墙的变形能力;在1/100位移角时,钢管-双层钢板-混凝土组合剪力墙轻微损坏,可作为低损伤墙肢。该文中可更换钢连梁由中部的消能梁段和两端的非消能梁段组成,大尺寸试件的拟静力试验表明,往复剪切作用下连梁的塑性变形和损伤集中在中部的消能梁段,可更换钢连梁的塑性转角可达0.06rad,滞回曲线饱满、稳定,通过合理设计连接节点可实现强震后方便更换消能梁段。

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